Castle APK Guides
Simple guides for installing Castle APK and checking the file before you install it. Castle APK is an Android streaming app that is not on the Google Play Store, so it is installed by sideloading an APK file.
How to Install Castle APK on Firestick - allow unknown sources, get the Downloader app, download and install, step by step.
Is Castle APK Safe? A Simple Safety Check - check the version, file size, hash and permissions before you install.
Latest version: v2.1.3, 36 MB, Android 5.0 and up. Facts checked November 2026.
For the download page, version history and full guides, visit Castle APK.